Rankings: Top 5 Heavyweights

1. Cain Velasquez

As UFC Heavyweight Champion, Velasquez is the undisputed #1 Heavyweight in the world. Coming off of a successful surgery and currently recovering, Velasquez will face the winner of the Junior Dos Santos vs Brock Lesnar fight. Having already beat Lesnar and displaying very well-rounded skills, Velasquez should not have a problem with either opponent to retain his Heavyweight Gold.

2. Alistair Overeem

Strikeforce Champion, DREAM Champion and K-1 World Heavyweight Grand Prix Champion are held by one man, Alistair Overeem. Upon a quick dispatch of former UFC star Todd Duffee, Alistair Overeem will attempt to avenge a loss to legend-killer; Fabricio Werdum. If all goes according to plan, Overeem will add the title of Strikeforce Heavyweight Grand Prix Champion to his list of accolades in 2011.

3. Junior Dos Santos

Thus far undefeated in the UFC, Junior Dos Santos is set to take on Brock Lesnar in the organizations return to Vancouver, Canada. With victories over Fabricio Werdum, Mirko Cro Cop and Roy Nelson, Dos Santos will face his biggest threat yet after a coaching stint on The Ultimate Fighter.

4. Brock Lesnar

With wins over Randhy Couture, Frank Mir, Heath Herring and Shane Carwin, former WWE star Brock Lesnar has tasted gold inside the octagon and looks to have the strap around his waist again. The only obstacle in his way is Junior Dos Santos. Will Lesnar's inability to take a punch be cured by the time these two mammoths steop into the cage? Only time will tell.

5. Shane Carwin

With only one loss in his professional career coming at the hands of Brock Lesnar, this wrecking machine looks to get back in the octagon follwoing a career altering back injury. With a laundry list of first round knockouts, this Heavyweight badass is expected to come back with a bang. But will his gas tank get him through it?